------------[ cut here ]------------ WARNING: CPU: 1 PID: 5671 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 1 PID: 5671 Comm: syz.7.322 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 5d 95 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e0 91 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe RSP: 0000:ffffc90002eaec88 EFLAGS: 00010246 RAX: ffffffff81a0b710 RBX: 0000000000000000 RCX: ffff888020c21dc0 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffc90002eaf0b7 R09: ffffc90002eaf084 R10: dffffc0000000000 R11: fffff520005d5e17 R12: ffff888020c23548 R13: ffffc9000130e030 R14: ffffc90002eaece8 R15: 0000000000000000 FS: 00007f8ec56f16c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ebdcb6000 CR3: 000000004f3c9000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_f2594087b0f175cc+0x32/0x45c bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:652 [inline] bpf_flow_dissect+0x12b/0x3f0 net/core/flow_dissector.c:896 __skb_flow_dissect+0x7c5/0x6260 net/core/flow_dissector.c:1029 skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline] ___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1638 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1703 skb_get_hash include/linux/skbuff.h:1432 [inline] skb_tx_hash net/core/dev.c:3256 [inline] netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153 netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4186 __dev_queue_xmit+0x756/0x2f80 net/core/dev.c:4261 neigh_output include/net/neighbour.h:509 [inline] ip6_finish_output2+0x108c/0x1510 net/ipv6/ip6_output.c:130 dst_output include/net/dst.h:452 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xc2a/0x1500 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648 expire_timers kernel/time/timer.c:1699 [inline] __run_timers+0x53e/0x800 kernel/time/timer.c:1970 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983 handle_softirqs+0x339/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0033:0x7f8ec734f1c0 Code: 49 8b 47 10 48 39 f0 72 76 48 63 cd 48 01 c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <48> 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 45 84 c9 RSP: 002b:00007f8ec56f0470 EFLAGS: 00000206 RAX: 00000000009e530f RBX: 00007f8ec56f0530 RCX: 0000000000000090 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f8ec56f05d0 RBP: 0000000000000102 R08: 00007f8ebd2d1000 R09: 0000000000000000 R10: 0000000000000000 R11: 00007f8ec56f0540 R12: 0000000000000001 R13: 00007f8ec754daa0 R14: 0000000000000000 R15: 00007f8ec56f05d0